In this paper, a new high frequency ultrasound (HFUS) system for high resolution skin imaging is presented. For imaging, mechanical scans are performed with spherically focused single element transducers. Two separate applicators with different transducers are utilized to fulfill the different requirements for imaging the skin with 20MHz ultrasound and for lower range high resolution imaging of...

despite the potential of high intensity ultrasound treatment on homogenization of milk and dairy based products, this treatment, under certain conditions, may lead to produce off-odors which can influence its applicability in the food industry. therefore, in this research, cacao flavored milk (chocolate milk) was treated using ultrasound at various levels of power intensity, exposure time, and ...

Ultrasound images are very noisy. Along with system noise, a significant noise source is the speckle phenomenon, caused by interference in the viewed object. Most past approaches for denoising ultrasound images essentially blur the image, and they do not handle attenuation. Our approach, on the contrary, does not blur the image and does handle attenuation. Our denoising approach is based on fre...

In this paper, we present a computationally simple algorithm suitable for fast, high resolution estimation of time delays and doppler shifts (which are necessary for target localization and tracking) between narrowband signals in an active sonar system. The algorithm uses a modulated Lagrange interpolation filter and an LMStype algorithm. The problem of delay and doppler estimation is reduced t...

SUMAN JAIN*, LEO H. VISSER**, MURALIDHAR REDDY YERASU***, RENUKA RAJU*, A.K. MEENA***, B LOKESH**** & SUJAI SUNEETHA* *CODEWEL Nireekshana ACET, Narayanaguda, Hyderabad, India **Department of Neurology and Clinical Neurophysiology, St. Elisabeth Hospital, Tilburg, The Netherlands ***Department of Neurology, Nizams Institute of Medical Sciences, Panjagutta, Hyderabad, India ****Department of Neu...

Although ultrasound arrays have been exploited in photoacoustic imaging to improve imaging speed, ultrasound-array-based optical-resolution photoacoustic microscopy (OR-PAM) has never been achieved previously to our knowledge. Here we present our development of multifocal OR-PAM using a microlens array for optical illumination and an ultrasound array for photoacoustic detection. Our system is c...

In a prospective study we invistigated internal derangement of knee (IDK) with High resolution ultrasound (HRUS). Aim was to determine effectiveness of ultrasound in diagnosing IDK and to compare with Arthroscopy. Ultrasound showed good sensitivity (91.3%) and specificity (90.6% ) and the figures were comparable toarthroscopic findings. We conclude that ultrasound is a simple, accurate, inexpen...

In ultrasound, a high frequency sound wave is launched into the eye with the help of a probe and the sound wave is reflected from different boundaries between microstructures. However, the OCT uses light rather than ultrasound. The speed of the light is almost a million times faster than sound and this difference allows the measurement of structures with resolution of =10 μ compared to 100μ sca...